Washing biodiesel

Q. My name is Saeid who talked to you on the phone on Monday(11:26).
Like I said on the phone I am doing engineering in Mcmaster University and we have project which is about biodiesel. I was searching on the internet and I saw your website; and I was wondering if you can help me out with this project. First of all let me tell that this project looks very interesting to me and that is why that I want to know more about it. I am doing the last part of the process which is washing and drying the product. I am going to list all the questions that I have below and I really appreciate your consideration and cooperation in advance:

1)What are the advantages and disadvantages of mist, bubble and stir washing?
2)What kind of equipment do we need for the other than DRUM,VERTICAL GRAVITY SEPARATOR and HYDROCYCLONE?
3)Which equipment is the most inexpensive one and most easiest one to maintain?
4)What do they do in drying part?
5)Is there any other equipment for drying it?

and at the end I was just wondering if I can buy a sample from you,
Best Regards

Saeid,
Mcmaster University

A. Here are the answers to your questions.

1. A. Mist washing

We use mist occasionally using a hose with a mister attachment. However, this does use a lot of water and water can overfill the container if not careful.

B. Bubble washing
We mist the majority of the time. We use an aquarium pump and air stone to bubble wash. This is the easiest way because you can set it on a timer or do it overnight. Since bubble washing re-uses the water so you don’t use as much water.

C. Stir washing

Sorry, can’t help you because we don’t use this technique. Other advantages and disadvantages can be found at http://www.biodieselcommunity.org/bubblewashingbiodiesel/

2. Plans and parts list can be found at: http://www.biodieselcommunity.org/appleseedprocessor/

3. The water heater is the most expensive if you buy a new electric one. Maintenance is usually just cleaning everything.

4. We “air dry” and use sunshine to dry the biodiesel by just putting the biodiesel in the sun.

5. You can also heat the biodiesel up, but that wastes energy.

Check out some other ideas at http://www.biodieselcommunity.org/dryingwashedbiodiesel/

Sure, you can buy a sample from us, but you could also make your own test batch in a old kitchen blender if you wanted
see example at http://www.dangerouslaboratories.org/biodiesel.html

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